Rafferty (jovial and happy. It would be strong young and old.)
Rainier (ADORE. I feel strength in Rainier.)
Raphael (I'm not that religious. It feels perhaps too close to God.)
Roscoe (It doesn't feel substantial enough at times. Reminds me of Costco.)
Rupert (It feels like the weaker Robert.)

These are all my opinions and views on the names. My views have been changing more recently because of the comments from everyone. Please don't be offended.